NAVIGATION SYSTEM Russian patent published in 2015 - IPC G01C21/00 

FIELD: physics, navigation.

SUBSTANCE: invention relates to controlling navigation and orientation systems, particularly correcting errors thereof and numerical criteria of the degree of observability of navigation systems with an inertial navigation system. The objective of the invention is improving the accuracy of measuring the deviation angle of a gyro-stabilised platform and improving reliability of operation. The navigation system includes an inertial navigation system with one output, a satellite navigation system receiver with one output, first and second adders, each having two inputs and one output. The output of the inertial navigation system is connected to the first inputs of the adders and the output of the satellite navigation system receiver is connected to the second input of the first adder. The navigation system is provided with a delay unit for delaying by one cycle, first and second amplifiers and a third adder having first and second inputs and one output. The output of the first adder is connected to the input of the delay unit and the input of the second amplifier. The output of the delay unit is connected to the input of the first amplifier, the output of which is connected to the first input of the third adder. The output of the second amplifier is connected to the second input of the third adder, the output of which is connected to the second input of the second adder. Each of the amplifiers has a gain coefficient equal to 1/2 gT.

EFFECT: high degree of observability of the deviation angle of a gyro-stabilised platform relative to a moving tetrahedron owing to generation of a signal for correcting and smoothing out measurement noise.

2 cl, 1 dwg